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Finding the Fourth Proportional to 563.32, 845.34 and 419.32

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Solution

The fourth proportional to 563.32, 845.34 and 419.32 is: 629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.32 : 845.34 = 419.32 : x
  2. Step 2: Convert to fraction form
    563.32/845.34 = 419.32/x
  3. Step 3: Cross multiply
    563.32x = 845.34 × 419.32
  4. Step 4: Simplify right side
    563.32x = 354,467.97
  5. Step 5: Solve for x
    x = 354,467.97/563.32
  6. Step 6: Final answer
    x = 629.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.